Hostname: page-component-745bb68f8f-mzp66 Total loading time: 0 Render date: 2025-01-24T02:42:51.406Z Has data issue: false hasContentIssue false
  • English
  • Français

Mixing layers in flows in star forming regions

Published online by Cambridge University Press:  25 May 2016

A. C. Raga  and
J. Cantó
A. C. Raga
Affiliation:
Instituto de Astronomía, UNAM, Ap. 70-264, 04510 México, D. F., México
J. Cantó
Affiliation:
Instituto de Astronomía, UNAM, Ap. 70-264, 04510 México, D. F., México

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

There are now many observations of high velocity, molecular emission associated with outflows from young stars. This emission might come from molecules that are formed in the outflowing material, or from entrained, ambient molecular gas. The present paper explores the latter possibility, describing the efforts that have been made to model the “lateral entrainment” that occurs in the turbulent mixing layer formed along the edges of a jet-like flow (or, equivalently, at any interface between a fast moving flow and the surrounding environment). A simple, analytic approach based on model equations is used to provide a qualitative picture of the dynamical, thermal and chemical structure of such a turbulent mixing layer. Finally, a review of the efforts up to date of modelling the dynamics and chemistry of turbulent mixing layers is presented.

Type
Star Formation
Information
Symposium - International Astronomical Union , Volume 178: Molecules in Astrophysics: Probes and Processes , 1997 , pp. 89 - 102
Copyright
Copyright © Kluwer 1997 

References

Birch, S. F., and Eggers, J. M. 1972, in Free Turbulent Shear Flows, Vol. I, Conf. Proc. NASA SP-321, p. 11.Google Scholar
Böhm, K. H. 1995, Ap&;SS 233, 11.Google Scholar
Cabrit, S. 1995, Ap&;SS 233, 81.Google Scholar
Cantó, J., and Raga, A. C. 1991, ApJ 372, 626.Google Scholar
Charnley, S. B., Dyson, J. E., Hartquist, T. W., and Williams, D. A. 1990, MNRAS 243, 405.Google Scholar
Chièze, J. P., Pineau des Forêts, G., and Herbst, E. 1991, ApJ, 373, 110.Google Scholar
Dash, S. M., and Wolf, D. E. 1983, AIAA paper 83-0704.Google Scholar
Dyson, J. E., Hartquist, T. W., Malone, M. T., and Taylor, S. D. 1995, in Circumstellar Disks, Outflows and Star Formation, eds. Lizano, S. and Torrelles, J. M., RevMexAA Conf. Series, 1, p. 119.Google Scholar
Falle, S. A. E. G. 1994, MNRAS, 269, 607.CrossRefGoogle Scholar
Giovanardi, C., and Lizano, S. 1995, in Circumstellar Disks, Outflows and Star Formation, eds. Lizano, S. and Torrelles, J. M., RevMexAA Conf. Series, 1, p. 129.Google Scholar
Glassgold, A. E., Mamon, G. A., and Huggins, P. J. 1989, ApJ, 336, L29.Google Scholar
Hartquist, T. W., and Dyson, J. E. 1988, Ap&SS, 144, 615.Google Scholar
Harvey, W. D., and Hunter, W. W. 1975, NASA Tech. Note D-7981.Google Scholar
Kahn, F. D. 1980, A&A, 83, 303.Google Scholar
Lizano, S., and Giovanardi, C. 1995, ApJ, 447, 742.Google Scholar
Malone, M. T., Dyson, J. E., and Hartquist, T. W. 1994, Ap&;SS, 216, 143.Google Scholar
Nejad, L. A. M., and Hartquist, T. W. 1994, Ap&;SS, 220, 253.Google Scholar
Noriega-Crespo, A., Garnavich, P. M., Raga, A. C., Cantó, J., and Böhm, K. H. 1996, ApJ, 462, 804.CrossRefGoogle Scholar
Raga, A. C., Cabrit, S., and Cantó, J. 1995, MNRAS, 273, 422.Google Scholar
Raga, A. C., Cantó, J., Calvet, N., Rodríguez, L. F., and Torrelles, J. M. 1993, A&A, 276, 539.Google Scholar
Rawlings, J. M. C., and Hartquist, T. W. 1996, ApJ (submitted).Google Scholar
Rawlings, J. M. C., Williams, D. A., and Cantó, J. 1988, MNRAS, 230, 695.Google Scholar
Reipurth, B., and Cernicharo, J. 1995, in Circumstellar Disks, Outflows and Star Formation, eds. Lizano, S. and Torrelles, J. M., RevMexAA Conf. Series, 1, p. 43.Google Scholar
Richer, J. S., Hills, R. E., and Padman, R. 1992, MNRAS, 254, 525.Google Scholar
Stahler, S. 1994, ApJ, 422, 616.Google Scholar
Taylor, S. D., and Raga, A. C. 1995, A&A, 296, 823.Google Scholar
Williams, D. A., and Hartquist, T. W. 1991, MNRAS, 251, 351.Google Scholar
Xie, T., Allen, M., and Langer, W. D. 1995, ApJ, 440, 674.CrossRefGoogle Scholar
Zeman, O. 1990, Phys. Fluids, A2, 178.Google Scholar
Zinnecker, H., Mundt, A., Geballe, T. R. and Zealy, W. J. 1989, ApJ, 342, 337.Google Scholar